Home / 156,743.32-216,303.73-85,123.80

Finding the Fourth Proportional to 156,743.32, 216,303.73 and 85,123.80

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Solution

The fourth proportional to 156,743.32, 216,303.73 and 85,123.80 is: 117,469.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,743.32 : 216,303.73 = 85,123.80 : x
  2. Step 2: Convert to fraction form
    156,743.32/216,303.73 = 85,123.80/x
  3. Step 3: Cross multiply
    156,743.32x = 216,303.73 × 85,123.80
  4. Step 4: Simplify right side
    156,743.32x = 18,412,595,451.77
  5. Step 5: Solve for x
    x = 18,412,595,451.77/156,743.32
  6. Step 6: Final answer
    x = 117,469.73

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.